Why does Adobe Acrobat DC's "Crop Pages" fail to crop my PDF?

[scherz0]

Please see the GIF below. You can download the PDF here.



Here's my goal. In the PDF, all pages are bordered by white blank space, but the white blank space start at different lengths from the border. Scilicet, the cutoff and dimensions of the text and images differ for each page.

Unquestionably it's too inefficient to measure the cutoff of white blank space on each page. So I'm cropping to eliminate the maximum white space, without cropping any of the substantive content.

 

[petergroft29]

Open the PDF in Acrobat.

Select the “Edit PDF” tool:
Choose “Tools” > “Edit PDF.” Or, select “Edit PDF” from the right pane.

In the secondary toolbar, click “Crop Pages.”

Drag a rectangle on the page you want to crop.
If necessary, drag the corner handles of the cropping rectangle until the page is the size you want.

Double-click inside the cropping rectangle.
The “Set Page Boxes” dialog box opens, indicating the margin measurements of the cropping rectangle and the page to be cropped. You can override the crop area you defined, by making new selections in the dialog box before clicking “OK.”

Apply these settings to additional pages, set the page range, or click “All” under Page Range.

Click “OK” to crop the selected page(s).

Save file:
Select a folder for the exported file or click “Choose a Different Folder” and navigate to the appropriate folder. Name the file and click “Save.”

Hope You Find This Useful,
Peter